...I've learned to pick the battles I can win and I simply avoid those I cannot! It's not worth the headache!
Battles I know I can win do not entice me as much as a challenge.
I live for headaches!
I would be interested to find out if the OP's complainer has a problem with carrying in general or just carrying at church.
That would change the degree of challenge or headache one might expect if a conversation were to take place.